Aspirator



Nov. 9, 192e.

D. M. ACKERMAN ASPIHATOR Filed Jah. 21, 1925 Patented Nov. 9, 1926.

UNITED STATES i recalca Parana? carries.

DLLETTA. MAY .ACKERMAN, UF LONGBEACH, CALIFORNIA, ASSIGNOR OF FORTY-NINE PER CENT 'lO PEARL D. PATCHELL. 1

ASPIRAT OR.

Application led January My invention aims to proivde an improved fluidactuated aspirator particularly adapted for use in conjunction withsurgical and massage appliances; although it is capa ble of varioususes.

in the accompanying drawings showingI one illustrative embodiment of myinvention, particularly adapted for actuation by domestic waterpressure,

Fig. 1 is a view in side elevation showing my improved aspiratorattached to a household spigot; i

Fig. 2 is a central sectional view in elevation of the aspirator showninFig. 1; and

Fig. 8 is a transverse sectional view taken on` the line 3-3 of Fig. 2.

Referring to the 'illustrative embodiment of the` invention shown in thedrawings, the form of my improved aspirator shown therein comprises ahollow approximately eggshaped shell 10, preferably made of aluminum,arranged with its axis vertical and having axial inlet and outletopenings at its upper and lower extremities for a suitable motive fluid,such as water under pressure. Centrally disposed within the hollowinterior of the shell is a Venturi nozzle 11 (Fig. 2), preferably castintegral therewith, and having an enlarged outlet terminating short ofthe bottom of the shell. The space between the enlarged upper end of thenozzle 11 and the innerwall of the shell is closed by a connecting web12 which is spaced be-` low the top wall of the shell to provide an airchamber 13, which has an opening communicating with an air exhaustingconduit 111, shown as an integral nipple projecting from the body of theshell near the top.

At the top of the shell, I have shown arestricting nozzle 15, adjustablythreaded into the inlet opening which extends downwardly into the airchamber 13, and preferably terminates at the enlarged inlet to theVenturi nozzle. The space surrounding the lower end of the nozzle 15provides an annular inlet for the air which it is desired to exhaustfrom the chamber to enter the Venturi nozzle and commingle with themotive fluid therein. Advantageously, this nozzle may 0 be adjustedlongitudinally to produce the most effect-ive suction. The top of thisnozzle is shown as being slotted to receive a screw driver, and may belocked in adjusted position by means of a threaded sleeve or nipple 16,shown in Fig. 2 as having a hex a1, 1925.Y serialV No; 3,862.

agonal portion in the upper end of its bore to receive an end wrench.

To provide convenient means for attachmg myaspirator'to an ordinaryhousehold spigot, I 'have shown the nipple 16, which is threaded into acounterbore in the shell threaded sleeve 18 direction. As` shown in Fig.1, this sleeve preferably has ears 2O projecting from it to facilitatethreading it on an, externally threaded bushing 21 carrying a suitablegasliet or packing 22 for yieldably engaging the mouth of the spigot. lhave shown thumb Screws 23 distributed around the bushing 21 at itsupper end togfacilitate securing it against lateral movement on thespigot after it has been adjusted properly. i

At the upper end of the shell I have shown opposed integral ears 24,each having alperforation to receive a hook 25 on the end of a chain orcord 26 which is adapted to be secured around the top of the spigot.This chain or cord 27 between its ends to permit it to be secured to thespigot under tension and hold the aspirator with its packing 22 inwater-tight engagement with the mouth of the spigot.

It is desirable `to reduce the velocity of the water and air beingdischarged from the aspirator and eliminate unnecessary splashing ofwater against the bottom yof the sink or basin under the spigot, and tothis end I have provided a bafHe 28 (F ig. 2) above the dischargeopening in the bottom of the shell. Conveniently, the bai-He may beintegral with the shell casting and preferablyv extends entirely acrossthe inside of the shell below the lower end of the Venturi nozzle. Itmay advantageously be shaped to divide and gradually spread the streaminto a circular sheet discharging radially against the sides of theshell. At spaced intervals near the inner wall of the shell I have shownopenings 29 (Fig. 3) through the ballie so that the spreading volume ofthe commingled water and air is permitted to escape in a plurality ofstreams. The chamber abovek preferably has a coil spring the bathe 28and around the Venturi nozzle serves as an air trap or air chamber tocounteract any tendency to produce a water hammer and eliminate theobjectionable noise incident thereto.

I have shown the baliie 28 as being pro'- videdwith a central openingwhich permits easy removal of the core sand from the lower end of theVenturi nozzle, and this opening is closed by a specially shapedadjustable plug 30 which is screw-threaded and has as'lot in its lowerend to receive a screw driver. rIhe upper end 31 of this plug nis'preferably tapered and cuivedas shown in Fig'. to produce a whirlingaction of a commingled air and water discharging from the enlargedoutlet end of the Venturi nozzle. This provides, in eillect, a secondrestriction in the Venturi nozzle to increase the suction. The width ofthe passage between the plug and outlet end of the nozzle may beadjusted to give the maximum suction et feet under service conditions.The enlarged annular space around the Venturi nozzle permits some ofthewater to passup in vit after striking the baille 28 and allows thecommingled air and water to expand more or less freely after` passingout oit the lower restricted opening between the bottom of the Venturinozzle and the baille.

The device'illustrated comprises a rubber hose or flexible tube 32 whichmay be slipped over the nipple 14, and any suitable applicator, such forexample, as the massage cup 33, may be inserted in the open end of thetube so as to utilize the suction to massage the body. However, myaspirator is capable of a wide variety of uses and I desire it to beunderstood that this illustrative use is not to be construed in arestrictive sense.

From the `foregoing description it'will be observed that I have produceda relatively simple and very durable aspirator in which threaded jointsand a multiplicity of parts that ordii'iaiily require accurate fittingto prevent leakage are eliminated. Also, Il have materially reduced theexpense of man-V ufacture by combining in a single casting a number ofthe elements of my invention. The device is easy to apply to a spigot byan unskilled operator and has very `ifi-rw parts apt to get out oforder. It is relatively small so that it may be carried in a doctorslri't as a necessary part 'of his equipment, and,A is ei:-

iective under a Wide range of conditions ot use.

Obviously, my invention is not limited to the particular embodimentherein shown and described.

I'Vhat I claim `and desire to secure by Letters Patent is:

l.' An aspirator comprising, in combina tion, a hollow shell presentingan integral web therein, a Venturi nozzle connected to the web, inletand outlet openings in the shell axially arranged'with respect to saidVei'ituri nozzle, a nozzle projecting through the inlet opening in saidshell and directed toward the Venturi nozzle, a baille member adjacentto said outlet opening within the shell, and means including a swivelclamping device for connecting said shell to a spigot.

An aspirator comprising, inconibination, an elongated hollow shell foraxial inlet and outlet openings therein, aVenturi nozzle axiallyarranged within said shell, a web cast integrally7 with said shell. andcarrying said Venturi nozzle, said shell presenting an a'ir exhaustingchamber above said Venturi nozzle, a baille below the lower end of saidVlenturi nozzle having a central opening therein, a plug having atapered project-ion extending into the lower end of said nozzle to causewhirling of the commingled air and waterilowing there through, andilexible attaching means :tor securing said shell over the mouth of awater spigot, said means having itsV ends connected to the oppositesides of the upper end ot said shell arranged to be looped over thespigot and a spring between its ends to produce a yielding watertightconnection.

3. An aspirator comprising, Ain comb-ina tion, a hollow shell havingaxially arranged inlet and outlet openings therein, a Venturi nozzlebetween said openings, an ir suction chamber above the Venturi nozzle, aswivel {itt-ing connected to the upper end oi' the 'shell and having ayieldable ypaching therein to ht over' the mouth oi' a spigot, clampingmeans `on the end for clamping the aspirator to the sidewalls of thespigot, and means yieldably to press the packing against the mouth ofthe spigot prior to clamping and to' assistin holding it in place` VIntestimony whereof, I have signed my naine to this specification. l e

DOLliE-TTA MAY ACKERMAN.

